Standing wave block



FIG. 1 is a perspective view of a standing wave block, showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a back elevation view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a right side elevation view thereof;

FIG. 8 is a perspective view of another embodiment of the standing wave block, showing our new design;

FIG. 9 is a top plan view thereof;

FIG. 10 is a bottom plan view thereof;

FIG. 11 is a front elevation view thereof;

FIG. 12 is a back elevation view thereof;

FIG. 13 is a left side elevation view thereof; and,

FIG. 14 is a right side elevation view thereof. 

CLAIM The ornamental design for a standing wave block, as shown and described. 